A photograph (also known as a photo, or more generically referred to as an image or picture) is an image created by light falling on a photosensitive surface, usually photographic film or an electronic image sensor.
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The purpose of a photograph has a large influence on how a photographer shoots, how they compose their images, and what equipment they use. Let’s take a look at the three general purposes of photography.
An effective photograph can disseminate information about humanity and nature, record the visible world, and extend human knowledge and understanding. For all these reasons, photography has aptly been called the most important invention since the printing press.
That is if you photograph the same scene with the same lighting conditions. As you’ll soon learn, these elements affect more than exposure. They also cause alterations in depth of field, motion blur, and digital noise. You can dive into manual settings once you understand how each one works. This is where you take control back from your camera.
Everyone has their own “hot take” when it comes to judging an image. Some see the bigger “picture,” while others take it as an analogy to life, transforming it into those “wise” quotes. As you widen your knowledge about photography, aesthetics, and techniques, you can unveil even more meaning behind a single photograph.
What is a Photograph? Photographs are still images produced on light-sensitive materials and also includes images stored digitally. Getty's Art & Architecture Thesaurus gives this definition.